<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>test</title>
  <script src="./js/Object.js" type="module"></script>
</head>
<body>
  <!-- 测试数组方法 -->
  <script type="module">
    const obj = { key1: 'value1', key2: 'value2' }
    console.log('自定义实现拼接对象属性键值对：' + obj.getKeyValueStr())
    console.log('自定义实现 Object.is：' + Object.is(0, -0))
  </script>
</body>
</html>